WO2018147695A1 - 다공체 품질검사장치 및 다공체의 품질검사방법 - Google Patents

다공체 품질검사장치 및 다공체의 품질검사방법 Download PDF

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Publication number
WO2018147695A1
WO2018147695A1 PCT/KR2018/001806 KR2018001806W WO2018147695A1 WO 2018147695 A1 WO2018147695 A1 WO 2018147695A1 KR 2018001806 W KR2018001806 W KR 2018001806W WO 2018147695 A1 WO2018147695 A1 WO 2018147695A1
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WO
WIPO (PCT)
Prior art keywords
porous body
pressure
contact resistance
diffusion layer
gas diffusion
Prior art date
Application number
PCT/KR2018/001806
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English (en)
French (fr)
Korean (ko)
Inventor
정혜미
강경문
양재춘
Original Assignee
주식회사 엘지화학
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 엘지화학 filed Critical 주식회사 엘지화학
Priority to JP2019541274A priority Critical patent/JP6879525B2/ja
Priority to US16/483,493 priority patent/US11495837B2/en
Priority to CN201880010485.9A priority patent/CN110268244B/zh
Priority to EP18751648.9A priority patent/EP3578953B1/en
Publication of WO2018147695A1 publication Critical patent/WO2018147695A1/ko

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04305—Modeling, demonstration models of fuel cells, e.g. for training purposes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4285—Testing apparatus
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/70—Carriers or collectors characterised by shape or form
    • H01M4/80—Porous plates, e.g. sintered carriers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/88—Processes of manufacture
    • H01M4/8803—Supports for the deposition of the catalytic active composition
    • H01M4/8807—Gas diffusion layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M2008/1095—Fuel cells with polymeric electrolytes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/0204—Non-porous and characterised by the material
    • H01M8/0206—Metals or alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/0204—Non-porous and characterised by the material
    • H01M8/0223—Composites
    • H01M8/0228—Composites in the form of layered or coated products
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/023—Porous and characterised by the material
    • H01M8/0232—Metals or alloys
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Definitions

  • the present application relates to a porous body quality inspection apparatus and a quality inspection method of the porous body.
  • a fuel cell is an energy conversion device that generates electrical energy through an electrochemical reaction between a fuel and an oxidant, and has the advantage of being able to continuously generate power as long as fuel is continuously supplied.
  • PEMFC Polymer Electrolyte Membrane Fuel Cell
  • the polymer electrolyte fuel cell stack evenly distributes the membrane-electrode assembly (MEA) and the reaction gases including an electrode layer formed by applying an anode and a cathode, respectively, around an electrolyte membrane made of a polymer material.
  • MEA membrane-electrode assembly
  • reaction gases including an electrode layer formed by applying an anode and a cathode, respectively, around an electrolyte membrane made of a polymer material.
  • Gas Diffusion Layer (GDL) for delivering generated electric energy
  • Bipolar Plate for supplying the reaction gases to the gas diffusion layer and discharging the generated water
  • Reaction gas between the electrolyte membrane and the separator and A gasket may be included to prevent leakage of the cooling water.
  • a separator plate (hereinafter referred to as a “porous body”) to which a metal foam or a metal mesh is applied has been proposed.
  • the porous body provided on the surface in contact with the gas diffusion layer of the separator plate allows the gas diffusion layer and the separator plate to be partially spaced apart, so that convection and diffusion actions occur in the spaces spaced apart, thereby lowering the diffusion resistance.
  • the spaced space between the porous body and the gas diffusion layer makes it difficult to predict the interface contact resistance between the porous body and the gas diffusion layer. Therefore, the method can easily find the interface contact resistance before applying the porous body to the fuel cell stack. There is a need for research.
  • a porous body quality inspection apparatus and a porous body quality inspection capable of finding out the interfacial contact resistance between the porous body and the gas diffusion layer generated by applying the porous body to the fuel cell stack before applying the porous body to the fuel cell stack, and inspecting the quality of the porous body.
  • the contact resistance measuring unit with the gas diffusion layer of the porous body the pressing unit for pressing the pressure-sensitive discoloration substrate on the porous body, calculating the contact area of the pressure-sensitive discoloration substrate and the porous body
  • a porous body quality inspection apparatus including an image mapping unit and a calculating unit calculating an interface contact resistance between the porous body and the gas diffusion layer.
  • the step of measuring the contact resistance of the porous body and the gas diffusion layer the step of pressing the pressure-sensitive discoloration substrate mounted on the porous body to a predetermined pressure, based on the color change region of the pressure-sensitive pressure-sensitive discoloration substrate
  • a quality inspection method of a porous body comprising calculating a contact area between a reduced pressure discoloration substrate and a porous body and calculating an interface contact resistance between the porous body and the gas diffusion layer based on the contact resistance and the contact area.
  • the porous body quality inspection apparatus and the quality inspection method of the porous body of an embodiment of the present invention has the following effects.
  • FIG. 1 is a schematic side view of an exemplary porous body quality inspection apparatus of the present application.
  • FIG. 2 is a view showing a measuring unit of an exemplary porous body quality inspection apparatus of the present application.
  • FIG 3 is a side view of a portion of an exemplary porous body quality inspection apparatus of the present application.
  • FIG. 4 is a schematic perspective view of an exemplary porous body quality inspection apparatus of the present application.
  • FIG. 5 is a view showing a portion discolored by the pressing portion of the reduced-pressure discoloration substrate of the present application.
  • FIG. 1 is a schematic side view of an exemplary porous body quality inspection apparatus of the present application.
  • FIG. 2 is a view showing an exemplary measurement unit of the present application.
  • FIG 3 is a side view of the pressing unit, the weight measuring unit and the image mapping unit of the exemplary porous body quality inspection apparatus of the present application.
  • FIG. 4 is a schematic perspective view of an exemplary porous body quality inspection apparatus of the present application.
  • Porous body quality inspection apparatus 100 as shown in Figure 1, the transfer unit 140, the measuring unit 110, the pressing unit 120, the weight measuring unit 150, image mapping The unit 130, a calculation unit (not shown), a product sorting unit 160, and a display unit 170 are included.
  • the transfer unit 140, the measuring unit 110, the pressing unit 120, the weight measuring unit 150, image mapping The unit 130, a calculation unit (not shown), a product sorting unit 160, and a display unit 170 are included.
  • the transfer unit 140 since each part of the porous body quality inspection apparatus continuously performs a predetermined function for the porous body conveyed by the conveying unit 140 including a conveyor belt 141 having an opening 142. , The quality inspection of the porous body 101 can be carried out continuously.
  • each part of the quality inspection apparatus according to an embodiment of the present application will be described in detail.
  • the porous body quality inspection apparatus 100 includes a measuring unit 110.
  • the measuring unit 110 measures the contact resistance measuring sensor 111 and the holder 112 on which the gas diffusion layer 113 is disposed in order to measure the contact resistance between the porous body 101 and the gas diffusion layer 113. It may include.
  • the measurement of the contact resistance may be performed by contacting the gas diffusion layer 113 disposed on the holder 112 on one or both surfaces of the porous body 101.
  • the holder 112 is provided through an opening 142 provided in the conveyor belt 141. It may be made by contacting the gas diffusion layer 113 disposed on both sides of the porous body (101).
  • the measuring unit 110 may include a gauge sensor 114 for measuring the thickness of the porous body 101. As shown in FIG. 2, the thickness of the porous body 101 may be performed by measuring the thickness of the porous body through the opening 142 provided in the conveyor belt 141 with the gauge sensor 114.
  • Porous body quality inspection apparatus includes a pressure unit 120 for pressing the pressure-sensitive discoloration substrate 121 on the porous body (101).
  • the reduced pressure discoloration substrate 121 of the present application means a substrate whose color is changed by mechanical pressure.
  • the type of the pressure-sensitive discoloration substrate 121 is not particularly limited as long as the color of the pressure-applied portion is discolored.
  • the microcapsules of the color developer layer may be formed by carbon / carbonizing paper, pressure-sensitive coating film, paper or pressure. It is possible to use films and papers in which this breaks and the color of the contact surface changes.
  • the pressurizing unit 120 presses the conveying roller for seating the pressure-sensitive discoloration substrate 121 on the porous body 101 and the dark-color discoloration substrate 121 seated on the porous body 101 to a predetermined pressure.
  • the pressure roller 122 may be included.
  • the pressing unit 120 presses the reduced pressure discoloration substrate 121 seated on the porous body 101 to a predetermined pressure, thereby serving to bring the porous body 101 into contact with the reduced pressure discoloration substrate 121.
  • the predetermined pressure is a pressure corresponding to the pressure received by the porous body 101 while contacting the gas diffusion layer in the fuel cell stack, and is equal to or equal to the pressure received by the gas diffusion layer in the fuel cell stack. It means a pressure with a small enough error.
  • the contact area similar to the aspect comes into contact with the porous body 101. Therefore, when the area of the discolored region of the pressurized pressure reducing substrate 121 is measured, the area of the porous body 101 in contact with the gas diffusion layer in the fuel cell stack may be measured.
  • the adjustment of the pressure applied to the reduced pressure discoloration base 121 by the pressure unit 120 may be performed by adjusting the position of the pressure roller 122 positioned on the conveyor belt 141, for example. As the pressure roller 122 is closer to the conveyor belt 141, the dark color discoloration base 121 is subjected to a strong pressure by the porous body 101 passing between the pressure roller 122 and the conveyor belt 141. Since the quality inspection apparatus of the present application can adjust the pressure applied by the pressurizing unit 120 even if the specifications of the fuel cell stack are changed, the contact area of the porous body 101 in contact with the reduced pressure discoloration base 121 is a porous body in the fuel cell stack. Can be similar to the contact area in contact with the gas diffusion layer.
  • the porous body quality inspection apparatus may include a weight measuring unit 150 for measuring the weight of the porous body (101).
  • the weight measuring unit 150 may include a tray 152 in which the porous bodies 101 transported by the conveyor belt 141 are stacked and accommodated and supported by the elastic body 151.
  • the weighing unit 150 is transferred to the tray 152 through the porous body discharge through area 133 provided in the collecting unit 132 of the image mapping unit 130 as shown in FIGS. 3 and 4.
  • the cumulative weight of the porous body 101 can be measured based on the vertical movement of the elastic body 151 to inspect the quality of the porous body.
  • the porous body quality inspection apparatus of the present application includes an image mapping unit 130 that calculates a contact area between the reduced-pressure discoloration substrate 121 and the porous body 101 based on the discolored region of the pressurized pressure-sensitive discoloration substrate. Since the pressurizing unit 120 pressurizes the pressure-sensitive discoloration substrate 121 seated on the porous body 101 to a pressure corresponding to the pressure received by the gas diffusion layer in the fuel cell stack, the image mapping unit 130 calculates the pressure reduction substrate 121. The contact area between the porous body 101 and the reduced pressure discoloring substrate 121 is similar to the area in which the porous body contacts the gas diffusion layer in the fuel cell stack.
  • the image mapping unit 130 of the present application as shown in Figure 4, the collecting unit 132, the porous body discharge for separating and collecting the pressurized reduced-pressure discoloration substrate 121 and the porous body 101
  • the through region 133 may include a scanner 131 scanning the discoloration region of the reduced pressure discoloration substrate 121.
  • the porous body 101 conveyed by the conveying unit 140 is a porous body discharge through area 133 provided in the collecting unit 132.
  • the porous body quality inspection apparatus of the present application is based on the contact resistance measured by the measuring unit 110 and the contact area calculated by the image mapping unit 130, a calculation unit for calculating the interface contact resistance between the porous body and the gas diffusion layer 113 ( Not shown).
  • the interfacial contact resistance means that the contact resistance generated by the contact of two objects is multiplied by the contact area of the two objects.
  • the said calculating part calculates interface contact resistance by following General formula (1).
  • ICR is the interfacial contact resistance between the porous body and the gas diffusion layer
  • R BP is the contact resistance between the porous body and the gas diffusion layer
  • AC actual is the contact area between the pressure-sensitive discoloration substrate and the porous body calculated based on the discoloration area of the pressurized pressure-sensitive discoloration substrate.
  • the porous body quality inspection apparatus of the present application may further include a product sorting unit 160 including a vacuum adsorption unit 161 in one example.
  • the product sorting unit 160 serves to spatially separate a porous body that does not meet a predetermined criterion from a porous body that meets a predetermined criterion.
  • the product sorting unit 160 removes the porous body that does not meet a predetermined standard stored in the tray 152. It may serve to take out from the tray 152.
  • the porous body quality inspection apparatus of the present application may further include a display unit 170 that outputs one or more of contact resistance, contact area, and interface contact resistance in one example.
  • the display unit 170 may output matters related to the quality of the porous body such as contact resistance, contact area, and interface contact resistance, so that the information regarding the quality of the porous body may be visually confirmed.
  • the present application also relates to a method for quality inspection of porous bodies.
  • the quality inspection method of the porous body of the present application comprises the steps of measuring the contact resistance of the porous body and the gas diffusion layer, pressing the pressure-sensitive discoloration substrate mounted on the porous body to a predetermined pressure, decompression based on the color change region of the pressure-sensitive pressure-sensitive discoloration substrate Calculating a contact area between the discoloration substrate and the porous body and calculating an interface contact resistance between the porous body and the gas diffusion layer based on the contact resistance and the contact area.
  • Quality inspection method of the porous body of the present application includes the step of measuring the contact resistance of the porous body and the gas diffusion layer.
  • the measurement of the contact resistance between the porous body and the gas diffusion layer can be made by measuring the contact resistance generated by contacting the gas diffusion layer used in the fuel cell with the porous body.
  • the measurement of the contact resistance may be made by contacting the gas diffusion layer of the contact resistance sensor comprising a holder in which the gas diffusion layer is disposed in contact with the porous body.
  • Quality inspection method of the porous body of the present application includes the step of pressing the pressure-sensitive discoloration substrate seated on the porous body to a predetermined pressure.
  • the reduced-pressure discoloration substrate may be seated on the porous body by the pressure-sensitive discoloration substrate transfer roller, and may pressurize the pressure-sensitive discoloration substrate seated on the porous body by the pressure roller.
  • the predetermined pressure is a pressure corresponding to the pressure that the porous body receives while contacting the gas diffusion layer in the fuel cell stack, and the error is small enough to be equal to or equal to the pressure received by the gas diffusion layer in the fuel cell stack.
  • Branch means pressure.
  • the porous body and the reduced-pressure discoloration substrate are brought into contact with the porous body with a contact area similar to that of the porous body contacting the gas diffusion layer in the fuel cell stack. Therefore, by measuring the area of the discolored region of the pressurized reduced-pressure discoloration substrate, it is possible to measure the area of the porous body in contact with the gas diffusion layer in the fuel cell stack.
  • the quality inspection method of the porous body of the present application includes the step of calculating the contact area of the pressure-sensitive discoloration substrate and the porous body based on the discolored region of the pressurized pressure-sensitive discoloration substrate.
  • the calculation of the contact area may use a method of calculating the area of the discolored area after scanning the discolored area of the pressurized pressure-sensitive discoloration substrate with a scanner.
  • the quality inspection method of the porous body of the present application includes calculating an interface contact resistance between the porous body and the gas diffusion layer based on the contact resistance and the contact area.
  • the interfacial contact resistance can be calculated by the following general formula (1).
  • ICR is the interfacial contact resistance between the porous body and the gas diffusion layer
  • R BP is the contact resistance between the porous body and the gas diffusion layer
  • AC actual is the contact area between the pressure-sensitive discoloration substrate and the porous body calculated based on the discoloration area of the pressurized pressure-sensitive discoloration substrate.
  • porous body quality inspection apparatus and the porous body quality inspection method related to the present invention it is possible to quantify the heat and electrical losses of the fuel cell stack by the porous body, it is possible to quantitatively check the manufacturing tolerances and surface pressure uniformity of the porous body.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Pathology (AREA)
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  • Physics & Mathematics (AREA)
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  • General Health & Medical Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Dispersion Chemistry (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Fuel Cell (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
PCT/KR2018/001806 2017-02-13 2018-02-12 다공체 품질검사장치 및 다공체의 품질검사방법 WO2018147695A1 (ko)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2019541274A JP6879525B2 (ja) 2017-02-13 2018-02-12 多孔体品質検査装置及び多孔体品質検査方法
US16/483,493 US11495837B2 (en) 2017-02-13 2018-02-12 Porous body quality inspection apparatus and method for inspecting quality of porous body
CN201880010485.9A CN110268244B (zh) 2017-02-13 2018-02-12 多孔体质量检查装置和多孔体的质量的检查方法
EP18751648.9A EP3578953B1 (en) 2017-02-13 2018-02-12 Apparatus for inspecting quality of porous body and method for inspecting quality of porous body

Applications Claiming Priority (2)

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KR1020170019120A KR102079134B1 (ko) 2017-02-13 2017-02-13 다공체 품질검사장치 및 다공체의 품질검사방법
KR10-2017-0019120 2017-02-13

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WO2018147695A1 true WO2018147695A1 (ko) 2018-08-16

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US (1) US11495837B2 (zh)
EP (1) EP3578953B1 (zh)
JP (1) JP6879525B2 (zh)
KR (1) KR102079134B1 (zh)
CN (1) CN110268244B (zh)
WO (1) WO2018147695A1 (zh)

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KR102532993B1 (ko) * 2022-11-30 2023-05-16 주식회사 엔비컨스 필름 두께 및 통기도 측정시스템

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EP3578953A1 (en) 2019-12-11
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US11495837B2 (en) 2022-11-08
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